Smelting-furnace with oil fire.



No. 876,275. PATENTED JAN. '7, 1908. A. KOCH.

SMELTING FURNACE WITH OIL FIRE.

APPLICA/HON FILED JUNE 27,1906.

4 SHEETS-SHEET l.

PATENTED JAN. 7, 1908.

. KOCH.

SMELTING FURNAGB WITH OIL FIRE.

APPLIOATION FILED JUNE 27.1006.

1 SHEETS-SHEBT 2 ,ZZ 7a. 655%: WW2? f mg No. 876,275. PATENTED JAN. 7. 1908.

` A. KOCH.

SMELTING FURNAGE WITH OIL NRE.

APPLICATION FILED JU'NE 27. 1906v 4 SHEETS-SHEET 4.

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AGUST KOCH, OF HANOVER-LIST, GERMANY.

` specification.

SMELTING-FUZNACE WTH OIL FIRE.

Specifica-tion of Letters Patent.

Patented aan. 7, 1908.

Application filed Tune 27\ 1906,. Serial No. 323 661.

.pire of Germany, have invented certain new and useful Improvements in a Smelting-Furnace With Oil Fire, of which the following 1s a The lpresent invention relates to furnaces for me ting metals, such as iron, steel, etc., -in which inthe customary manner the gaseous products of the melting process in passing) off preliminarily heat the charge for the -su sequent melting in two or more communicatin chambers. The conducted and radiated eat, generated during the melting process is used for vaporizing the liquid fuel -aswell as for heating the air necessary for the combustion, so that in spite of the drop in temperature caused by heating a charge to be subsequently melted, the fuel is vaporized and-the air heated to a high temperadues-'for melting' metals.

ture. By this ineans it is possible to suc.- cessully use the heaviest oils and oil resi.-

As the heat of the air and the vaporiaed fuel is very intense, the highest tem erature may be generated solely by means o the heat of the refuse gases and the heat radiated by the melting chambers and the Walls thereof. The air necessaryl for the combustion is led into the preliminary heating chamber so that it passes along the wall of the melting chamber thereby cooling the latter and prolonging the usefulness of the furnace.

In the present invention, the chambers which contain the air heatingand'vaporizing tubes are located within the furnace between the melting chambers so that they are eX- posed to the heat of the refuse gases resulting from each melting, as well as to the heat ra diated by the melting chambers and their walls.

The air and vaporizing chambers are connectedwith the adjoining melt-ing and heating chambers so as to permit the hot refuse gases to first pass through the oil vaporizing chamber and then through the air heating chamber. The melting chambers are used alternately so that while the' melting process is underway in one chamber, the other chamber i u1' `:ed with metal to be melted. l The al by the gases which enter the same from the chamber in which the melting is in progress. The gases entering the preliminary heating ,feeding chambers.

.ne latter is preliminarily heatedy chamber are so intensely heated that in the case of a metal of a low melting point, the melting is accomplished without necessitating any additional heating of this chamber.

The invention will now be described with reference to the accompanying drawings and the distinctive fea-tures thereof more particularly set forth in the annexed claims.

Figure l is a vertical section through one of the melting chambers. Fig. 2 is a vertical section through the oil vaporizing and air Fig. 3 is ahorizontal section and Fig. 4 is a sectional elevation showing the melting chambers and the relation of the air and fuel chambers thereto.

The furnace may be constructed of any suitable material in the usual form and is provided with two melting chambers A, C which are connected by a passage B and rovided with the ordinaryform. of peepiole openings M through which the melting process may be conveniently observed.

Located between the chambers A, C, are an oil vaporizing chamber E and an air heating chamber F. The chamber E is provided with a plurality of heating coils G through which the oil continuously circulates.

H are tubes in the chamber F which serve to break the volume of air entering the chamber int-o thin layers to facilitate the heating process.

J and K are pipes communicating with the oil vaporizing and air heating chambers respectively. L, L are mixing pipes into which the vapor and heated air are discharged from the pipes J and K and combine.

D is a passage communicating with the melting chambers and the vaporizing and air heating chambers which is provided with fire proof gatesN operating in suitable guide ways. During the operation of vthe furnace the gate which communicates with the passage leading to the chamber, which 1s bemg j used for melting, is closed, while that leading to the preheating chamber remains open. By this arrangement the Waste gases are forced to pass through the preheater from which they enter the oil vaporizing chamber. Assuming that the melting process is in progress in chamber A, the hot gases arising therein pass through the passageway B into the chamber C, which has been charged with metal, and preliminarily heat the metal contained therein. From the chamber Cthe gases pass through the passage D into the oil vaporizing and air heating chambers, and

the hot gases combined with ,the heat radiated from the Jfurnace itself cause the oil to vaporize and heat the air.I The vapor and air thus prepared are led through the pipes J and K into the common pipe L where they are mixed and led into the melting chamber.

Havin thus' described my invention,

what I c aim as newitheren and desireto' secure .by Letters Patent is:

1. In afurnaceof the combination'of a plurality .of chambers adapted to be alternately used for melting and preheatin oil Vaporizing and air heatf ing chambers ocated between said melting chambers, so that the heat radiated 'by the melting chambers will Vaporize the oil and preheat the air insaid air and oil chambers.

2. In a furnace of the character described, the combination of two melting chambers adapted to be alternately used as melting and preliminary heating chambers, of means for carrying .the heated gases from the melting chamber to the preliminary heating chamthe character deseribed,

ber, an oil vaporizing chamber and an air heating chamber located between said melting chambers .and means for heating the air and oil in said air heating and .v a orizing chambers 'by the refuse gases. and t e heat generated in the melting chamber during the melting process.

In ay furnace of the character described, the combination oftwo melting chambers adapted to bealternately used as-meltin and preliminary heating chambers, an oi vaporizing chamber an air heating chamber .located between said melting chambers and -means for utilizing the refuse gases and. heat the melting for heating thel generated during air and oil in sald air and oil heating chambers.

In testimony whereof I aHiX my signature in the presence of two Witnesses.. AUG. KOCH. Witnesses:

HENRY I FDLLER, HERMINE GDECKE. 

